Background Data collected using the South Australian chronic disease and risk factor surveillance system were analysed in order to monitor changes in the prevalence of overall health status over time.Methods The South Australian Monitoring and Surveillance System (SAMSS) has been conducted monthly since 2002. This representative, population, chronic disease and risk factor, telephone-based surveillance system includes a single question determining the prevalence of overall health status (SF1) and a wide range of demographics, social, chronic conditions and risk factor indicators. Results Between 2006 and 2008, 83.2% of respondents reported ‘Excellent, Very Good or Good’ health and 16.8% reported ‘Fair or Poor’ health. There was a statistically significant trend in the age sex standardised prevalence of those reporting ‘Very Good’, ‘Good’ or ‘Poor’ health from 2002 to 2008. The SF1 identifies ‘Fair or Poor’ health in the case of those with chronic conditions and health risk factors, and ‘Excellent, Very Good or Good’ health in the absence of chronic conditions. A wide range of social, demographic variables, with those of a lower socio-economic status in particular, statistically significantly more likely to report a lower overall health statusConclusion The SF1 can be used to measure general health as part of telephone surveys and surveillance systems
